OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application
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/*
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* edma_test.c
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*
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* brief EDMA3 Test Application
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*
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* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE Y) L. ?# S) b
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT9 a" k' y& k/ D) @7 }
* TO CHANGE.* R ]* @6 F# V, G G- s! n
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/* e# L6 M/ { |5 y3 U
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as3 N, x& W. K; W6 \# V% X* D& V# r+ S1 u
* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
* kind, whether express or implied; without even the implied warranty6 u/ E: v: J0 E7 U) O: `+ f! S
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the5 @) M+ j% I9 h) |6 I* ?+ {
* GNU General Public License for more details.' G6 e2 O" y9 c* E; b5 a$ r
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#include <linux/module.h>( I" F# V: e8 q9 _
#include <linux/init.h>
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#include <linux/errno.h>! m+ _: l: a2 r* X" F3 o8 h
#include <linux/types.h>2 b$ k$ l0 P7 X% }& I( ]8 L
#include <linux/interrupt.h>( g( |$ g1 A) g. f3 e
#include <asm/io.h>5 W/ K3 A7 f4 P+ W
#include <linux/moduleparam.h>, f8 |' @; l) }+ P
#include <linux/sysctl.h>
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#include <linux/mm.h>7 U4 l& r5 i2 n3 \- i" a3 r9 j
#include <linux/dma-mapping.h>
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#include <mach/memory.h>4 L& }. ~, b% {1 P' K3 x
#include <mach/hardware.h> Z5 i7 P7 m+ J. U
#include <mach/irqs.h>
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#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG. `1 ~+ o- ?9 n% P Y
/*#define EDMA3_DEBUG*/$ ?, l- b& w" z5 n* u8 k3 t7 H+ F
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#ifdef EDMA3_DEBUG T: S" h0 O) g* Y; h
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
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#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)' ?5 Y* a& v+ K
#else. T, e# [& A$ Z* H( S( n9 X
#define DMA_PRINTK( x... )
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#define DMA_FN_IN1 G! F( r# w! q5 ~' x) B
#define DMA_FN_OUT
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#endif3 a0 b5 Q% ^) y
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 210 }, I9 V0 X e, H/ R( d1 k T
#define TCCHEN_SHIFT 226 N1 Z- f% H2 ~* p
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;1 N7 q& {! p7 b1 ~) D
static volatile int irqraised2 = 0;, Y+ T9 m+ S4 I/ J5 |: b
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);& x3 [: X5 K- H9 v) h3 }9 b
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);6 r; j2 I8 d |. ~" X3 Y; _1 \
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;: B2 F$ z) ?: N" E$ B
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);( o3 O! _9 L5 W& F4 ?
module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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